Temperature effects in the blown Newtonian film.

Abstract

The film blowing process, by which thin polymer films are manufactured, is modelled by highly nonlinear differential equations. Typically, analysis of these using numerical techniques leads to instabilities. Our earlier work used an iteration process to construct the film bubble profile and some associated quantities for the simplest case of a Newtonian film incorporating an axial temperature variation. Now we extend this to an investigation of the effects of variations in temperature parameters on the film radius, film fluid velocity, film thickness and overall temperature profiles. This information is of considerable use to investigators examining the film blowing process. References

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